“The Sonship in its oneness does transcend the sum of its parts. However, it loses this special state as long as any of its parts are missing. This is why the conflict cannot ultimately be resolved until all of the individual parts of the Sonship have returned. Only then can the meaning of wholeness in the true sense be understood.” (ACIM, COA ed., T-2.XII.7:5-8)
What is alluded to in this passage is why we are here on earth. We are to save our fellow men and women. This is why form is important, for our earth, we need form, and we need not to long for the ethereal only. In my opinion, this need, to save the Sonship, is why Jesus scribed A Course of Love. Readers of A Course in Miracles were left with a desire just to go into the ethereal, the formless, after death—and are we not needed on earth?
The Sonship needs each and every one of us saved in the ultimate sense, with Awakening, with Christ-consciousness (which is the same thing). Only when all have returned is our mission completed.
Only then can we float into the ethereal with a clear conscience. For we take everyone with us.